Siemian received the majority of first-team reps during Monday's practice, the Broncos' official site reports.
Siemian reportedly connected on a host of deep balls during his repetitions, including strikes to top receivers Emmanuel Sanders and Demaryius Thomas. The lone holdover from last year's quarterback room, Siemian has reportedly been giving presumed starter Mark Sanchez a run for his money this offseason. Unlike Sanchez, he failed to lead Denver to a touchdown in the preseason opener, but he just missed on several opportunities. Also unlike Sanchez, he did not turn the ball over.